Turboprop engine-upgrade company Blackhawk Modifications this week announced progress toward a supplemental type certificate (STC) that will boost performance in the workhorse Beechcraft King Air 350.
Beechcraft King Air 350 Engine Upgrade STC on the Way
Key Takeaways:
- Blackhawk Modifications is developing an XP67A Engine+ upgrade for the Beechcraft King Air 350, aiming for a Supplemental Type Certificate (STC) by May after flight testing begins in November.
- The upgrade replaces the original 1,050 shp PT6A-60A engines with more powerful 1,200 shp PT6A-67A engines and includes a five-blade propeller upgrade.
- This enhancement is projected to increase cruise speed by about 37 ktas (to 340 ktas), provide increased range, and deliver significantly better climb performance, particularly in hot temperatures, improving safety.
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